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Blackmold wrote:Looking at the plans of the Bokabob mini and doing searches I found most of the information but still have three questions. Hope they are not “Duh” questions. This is my first project of this kind.
1. on the copper coil it looks like 10 turns @ ¼” spacing between coils but on the diameter of the coil should it touch the walls or have a gap? if so, how much? I think the latter.
2. on the two plates the upper is 1 ¼” width @ 30 degrees but I need the depth information. On the lower plate @ 30 to 45 degrees and notch bent at center of tube. I need to know the notch width and depth/width of lower plate.
3. Is the top left open or is it capped/sealed?
Blackmold wrote:Thanks for all the help and info . I Will be bending the coil next, one trick I learnt from a bubba in Florida, you fill the pipe with sand and if very tight turns for that diameter you pour water into pipe it packs the sand tighter then bend the pipe, if wet put in oven @ 250 deg F to dry.
Remove the sand.
I was bending ½ inch copper pipes to put into chimney of wood heaters to heat the water.